i think it's a little parasitic bacteria
As of now, the smallest bacteria on Earth are those belonging to Mycoplasma.
Mycoplasma Pneumoniae
Mycoplasma species have been isolated from women with bacterial vaginosis. M. genitalium infection is associated with increased risk of cervicitis, pelvic inflammatory disease, preterm birth and spontaneous abortion, and infertility. Mycoplasmas are associated with fetal respiratory distress syndrome, bronchopulmonary dysplasia, intraventricular hemorrhage in preterm infants, and most commonly what is termed as -walking-pneumonia.
A virus that infects bacteria is called a bacteriophage
Bacteria and virus
A kind of bacteria called MYCOPLASMA GENITALIUM, it's diametre is only 250 nanometres.
A Paramecium.-----------------------The simplest living organism is actually what is called Mycoplasma genitalium. It has a genome of only 580,000 base pairs and 482 protein-coding genes. Mycoplasma genitalium is a tiny parasitic bacteria that lives inside the digestive & genital tracts of certain monkeys & primates
mycoplasma do not have a cell wall
Mycoplasma is a genus of bacteria that lack a cell wall. They can be parasitic or saprotrophic, with some considered to be pathogenic in humans.
Mycoplasma
I believe the three smallest bacteria are Rickettia, Chlamydia, and Mycoplasma.
mycoplasma, rickettsia and chlamydiae
As of now, the smallest bacteria on Earth are those belonging to Mycoplasma.
Mycoplasma Pneumoniae
The cell having the smallest genome out of all known cells is Mycoplasma genitalium, with 482 genes comprised of 580,000 bases. (An ameba is not the simplest cell, and has more genetic information than a human.)
What you are probably intending to ask is about mycoplasma. It is a common bacteria that causes infection of the lungs. This is also called mycoplasma pneumonia
Mycoplasma.